[69401] in North American Network Operators' Group
Re: Anti-Spam Router -- opinions?
daemon@ATHENA.MIT.EDU (Hank Nussbacher)
Sat Apr 10 14:27:29 2004
Date: Sat, 10 Apr 2004 21:24:56 +0200
To: nanog@merit.edu
From: Hank Nussbacher <hank@mail.iucc.ac.il>
Errors-To: owner-nanog-outgoing@merit.edu
>Has anyone had any experience with this device? Turntide.com. Looks like a
>traffic-shaping device designed specifically for cutting down spammers
>throughput to your inbound SMTP servers. My main concern is, how does it
>make the distinction between legitimate mass-mailings (e.g.: mailing lists
>such as this one), and spam? Interesting approach to killing spam though I
>must say.
SMTP is only about 40% of the spam these days. The rest is via HTTP and
DAV (I have seen an upsurge of Hotmail DAV spam since March 18) as per
http://www.unicom.com/chrome/a/000267.html) so you would need a solution
that handles all formats.
I would like to draw your attention to a company called Pineapp
(www.pineapp.com) that has a product called Antiflood. It handles SMTP and
HTTP. For HTTP it analyzes the headers and doesn't allow more than n
number of recepients. It allows the admin to set the maximum posts per
time frame, has URL blocking time, maximum outgoing recipients, safe URLs
not to be time-blocked, etc. It is not really a router but rather an
inline transparent proxy box. It is geared for Cybercafes where much spam
still originates.
-Hank
Note: I do not work for Pineapp.
